Okay, I figured out the problem. It's the angle of my lines. Here it is rotated a bit clockwise, and you can see that it looks clean. Just the limitation of screen resolution. Guess I haven't used that particular angle in a while, or just didn't notice it before. Thank you Wade and Kurt for your responses.

Hi Wade, your images look blurred a little, while mine from the first post have jagged edges. I wanted to save the image with a transparent background, and jpeg doesn't allow that, but I think I can work around this. Thank you for your assistance.